linux嵌入式qt的屏幕旋轉與字體大小問題

【1、與qt程序顯示文字大小有關的兩項】

export QWS_DISPLAY=LinuxFB:mmWidth200:mmHeight100:0   //輸出設備為Linux framebuffer，尺寸定義（尺寸定義與文字大小有直接關系）

export QWS_SIZE=480x272   //屏幕大小

【2、屏幕旋轉】

export QWS_DISPLAY=Transformed:Rot90    //旋轉90 可以旋轉0、90、180、270

想讓qt支持旋轉，在編譯嵌入式qt的時候要加上-qt-gfx-transformed選項

【3、舉一反三：在屏幕旋轉的同時保持文字大小】

export QWS_DISPLAY=Transformed:Rot90:LinuxFB:mmWidth200:mmHeight100:0

 

【4、用-display參數來代替以上export的變量】

假如將運行的程序是qtdemo

qtdemo -qws  -display "LinuxFB:mmWidth200:mmHeight100:0"

qtdemo -qws  -display "Transformed:Rot90"

qtdemo -qws  -display "Transformed:Rot90:LinuxFB:mmWidth200:mmHeight100:0"

 

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當然也可以在配置文件中設置，如下：

export TSLIB_TSDEVICE=/dev/input/event1
export TSLIB_CONFFILE=/usr/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_CALIBFILE=/usr/etc/pointercal
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_CONSOLEDEVICE=/dev/tty
export QTDIR=/usr/lib/QT
export LD_LIBRARY_PATH=$QTDIR:$LD_LIBRARY_PATH
export QT_QWS_FONTDIR=$QTDIR/fonts
export QT_PLUGIN_PATH=/usr/lib/QT/plugins

export QWS_MOUSE_PROTO=tslib:/dev/input/event1
export QWS_DISPLAY='Transformed:Rot90'

------------sno: 另一個別人的設置信息：

 

export PATH=/opt/Qtopia/bin:$PATH
export LD_LIBRARY_PATH=/opt/Qtopia/lib:$LD_LIBRARY_PATH

export QTDIR=/usr/local/QtArm
export QPEDIR=/usr/local/QtArm
export PATH=$QTDIR/bin:$PATH
export LD_LIBRARY_PATH=$QTDIR/lib:/usr/local/lib:$LD_LIBRARY_PATH
export TSLIB_TSDEVICE=/dev/input/event0
export TSLIB_CONFFILE=/usr/local/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/local/lib/ts
export TSLIB_CALIBFILE=/etc/pointercal
export QT_QWS_FONTDIR=/usr/local/QtArm/lib/fonts
export QWS_MOUSE_PROTO="TSLIB:/dev/input/event0 USB:/dev/input/mice"
export QWS_SIZE='320x240'